Useless books!
We've had lists of favourite books, poets etc. What we need now is a list of really useless crap tomes, you know the ones, badly written about stuff no one is interested in. Not quite heavy enough for a door stop, not quite thick enough to stop the bed wobbling, paper too rough for toilet use. In short completely and utterly without any redeeming features whatsoever, they probably won't even burn!
I offer my personal award for services to the destruction of the rain forests to DIY manuals.
Why? Because in my experience anyone that needs a book, (probably written by some idiot like Handy Andy) to tell them how to do a job would be better off spending the money on employing someone that knows what they're doing. If you need confirmation of this theory you only need look as far as the lists of TV programmes about DIY disasters!